Battery tool



Aug. 30, 1932. FABIAN 1,874,944

BATTERY TOOL Filed April 2, 1931 Patented Aug. 30, 1932 ;.f

UNITED STATES Louis FABIAN, or izonmnofioii ro Y; f;

This invention relates to tools, but more particularly to tools adapted to remove a clamping nuts from battery terminals, the

metal of which frequently becomes so corroded by the acid from the battery that it is practically impossible to unscrew them by the ordinary wrench or pliers.

An object of this invention is to produce a simple and efficient tool which can be used satisfactorily to remove nuts or bolts which have been corroded, or which are impossible as a practical matter to remove with the ordi nary tool.

Another object is to produce a tool having gripping jaws provided with teeth which, when gripping force is exerted, tend to cam or urge the tool in one direction laterally of the work.

Further objects and advantages will hereinafter appear, and, for purposes of illustration, but not of limitation, an embodiment of the invention is shown in the accompany in drawing, in which: i f

Figure 1 is a side elevation of the tool;

Figure 2 is an enlarged fragmentary elevation of the tool shown in Fig. 1 with the clamping jaws moved toward each other;

Figure 3 is a vertical sectional elevation on the line 33 of Fig. 2;

Figure 4 is a view on the line 4-4 of Fig. 2 showing the gripping teeth in one of the jaws; and

Figure 5 is an end View of the jaws substantially as indicated by the line 5-5 in Fig. 2.

The illustrated embodiment of the invention comprises a tool having gripping jaws 10 and 11. Extending from the jaw 10 is a pair of depending flanges 12 between which projects an car 13 extending from'the jaw 11.

A pin 14 provides a pivot .for the jaws and extends through the flanges 12 and ear 15.

An important feature of the invention resides in the form of the teeth formed on the gripping surfaces of the jaws 10 and 11. As shown in Fig. 4, teeth 15 on the jaw 11 are inclined at approximately an angle of This angle may be computed from a line extending betweenthe jaws and disposed parallel to the axis of the pin 14. The teeth 16 on the jaw 10 are inclined in the opposite dire'c--= giant-rem the teethgaao 'theww 111;: but' the aa leref inclinatien is substantiall thesame assthat -ef the teeth Asshown Figna the was 10" and 'il -aire pmvidedfivith 'op sitlely-in'clined:surfaicesiT and 18. Itf-w-i'll thus beseen fllat'when the t'ool applied Itoanut-'the sides of whio'h are sogeorr'odedthat they are no loriger-parallel, a bitingaetionmffi the jaws ished "by their divergent relation- By: xiirtneoffthe'above construction; when the tool: is applied :-to a nut f 'or ibolt ihead' wilth the partsposit mnedas shown .in' Figs. land 2-,

V theregisa' tendenby for lthel teeth td cam the" toola sidewise dne rd' ilrectibn'iat the time the I jawsaazre" fclamped and ea-turning movement im arted to the tool. This ofcorisidbraible" vs; uewhTen rtli'e tooltis' applied to limit or bhlt headavlhidh-has becomeso'corrodedlas toreny f i der uselesslas aipraotical. matter the ordinary waenchonpliersvg. v l, i i The tnol should 'zbeziapplied' to such a lnut I or: bolt head at that $113 -tendsto move latiefiealzliviin lthe direction roifsaisubistanifiially 7 Thus, it will ,be apparentflthat abutment. when the jaws 10 and 11 arefiurced toward each iother' into clamping relation a s'ecu're andifisatisfactory -grip "may ibel obtained won the nut er bolt :headto which :thegtljol g'is applied,- threby enabling the tnut or. -bolt to be 'rnr" unscrewed in a Tsimple) ;a1idjLycbIE- venient ima nneri llhettoolthereby performs a function "which the :.:ordinary tool of this charaoterrcouldnot panama-nee the ridges, corrugations, or teeth: on" the-gripping sun facessof 'theiondin'ary 'to'o'l aretsubstanti'allly parbxllelte eachrothergiand therefhre i t vvouldw slxip zaround the: illiltifil zbolt head, so "that in order toremove the element-itfibe'nee'essarywstosibreakdit ofia echiselirng orr some other means; 1 ij Tlie-afjawv- J11 Eisi'iprlovided with a relatively long handle arm 19, and the jaw 10 is provided with a relatively short arm 20. A pair of bell cranks 21, which may be integrally connected at their outerends at 22, is provided with long handle arms 23 and relatively short arms 24 extending at angles of approximately 45 to the handle arms 23. The bell cranks 21 straddle the handle arm 19, and are pivoted substantially at their apex at 25 to the handle arm 19 adjacent the pivot 14 of the clamping jaws. The short arms 24 of the bell crank are provided with registering elongate slots 26 in which a pin 27 secured to the short arm 20 of the jaw has relative movement. It will be understood that the short arms 24 of the bell crank straddle the jaw extension 20. 10 For normally holding the handle arms 19 and 21 in separated relation a leaf spring 28 I bears at one end against the arm 19, and is bent over a pin 29, which connects the arms 21, the opposite end of thespring engaging the handle arm 19 in the region of the pivot l li a ,Owing to the above described construction, it will be apparent that slight movement of the gripping jaws 10 and 11 will be efiected by much greater movement of the handle. arms 19 and 23. This enables thetool to be readily and. conveniently oscillated'for unscrewing or screwing nuts and bolts in relatively' inaccessible positions. It will also be 7 apparent that due to the arrangement of the bell cranks 21 a great amount of force can be. secured at the clampingjaws 10 and 11. without any great amount of exertion on the part of the operator. The tool is sturdy, rigid,

and may be manufactured at a relatively low cost. It will also be noted that the tool may be conveniently assembled minimum period of time.- I

It is to be understood that the above de-- scription is given merely by way of'illust-ration and not of limitation, and, although the tool has been described as particularly useful for battery purposes, the scope of the invention is much broader, and it is intended that 40? this invention be defined by the appended claims. i

i What I claim is: a V 1; A tool of the class described comprising a pairof pivotally connected jaws, said jaws 46' having opposed gripping faces divergent fromone side edge to theopposite side edge, and gripping teeth on said jaws inclined in opposite directions'at an angle substantially toa line parallel to the axis of said jaws.

501 v 2. A tool of the class described comprising a pair of pivotally connected jaws, said aws having opposed gripping 'faces divergent. from one side edge to the opposite side edge, and gripping teeth onisaid jaws inclined in opposite directions.

.,.In testimonywhereof I have hereuntoi signed my name to this specification.

' Lou s FABIA 

